Javier Ortensi, Ph.D., is a Research and Development scientist in the Reactor Physics Analysis and Design Department at Idaho National Laboratory. He is the deputy lead in reactor physics for the DOE Nuclear Energy Advanced Modeling and Simulation (NEAMS) program. He is the principal investigator (PI) for the development of the Griffin reactor physics application under the NEAMS program and PI for the U.S. NRC non-LWR modeling and simualation project at INL. Dr. Ortensi received his B.S. in Radiological Engineering and M.S in Nuclear Engineering from Texas A&M University and his Ph.D. in Applied Science and Engineering from Idaho State University. His research focuses on the multiphysics simulation of advanced nuclear reactors. Dr. Ortensi has 5 years of LWR industrial experience with Entergy Operations Inc., has authored and co-authored more than 77 peer reviewed publications, and holds 4 software copyrights. He obtained a Professional Engineering license in nuclear engineering in 2004.